If there are new libraries to do the foll or so plz do let me know
QuoteIf there are new libraries to do the foll or so plz do let me know a human year equals an arduino century so OK maybe less but there is a lot of new stuff especially IDE 1.0I2C master slave:Seen - http://www.arduino.cc/en/Tutorial/MasterReader - this one ?
2. LCD menus: Any easy way to implement this on 16by2 display? (I tried hard coding but used up some 20KB of my prev proj smiley-sad ) like functions or new libraries? I know about luidr's phi menu. But is there tutorial or so showing how to get it to work. (I am planning on using 4 buttons for my menus). Or is there anything better? need to do this menu thing right this time wasted lots of time working on it to get it right last time
. The phi-menu has been rewritten and expanded to the phi_prompt smiley Please find the most recent phi_prompt library here:http://code.google.com/p/phi-prompt-user-interface-library/Get the 1.0 pre-release and the doc of the previous edition. I am still working on the new doc. The library comes with plenty of sample codes to get you started.
Only concern about your plan I have is that if you use i2c master slave, then the slave end can't read its RTC since the RTC is on i2c and a slave can read at will. Have you thought about that or do you only need RTC on master, which is fine?
The RJ45 Porto should take care of connecting things up at long distance.
switch to rs485 for distance (at the price of speed)
Try I2C on twisted pairs first to see how far you can push at 100KHz frequency. Without testing it's hard to say for sure.